<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    .loading-list{
        width: 200px;
        height: 200px;
        background-color: skyblue;
        margin: 30px auto;
        position: relative;
    }

    .loading-item{
        width: 20px;
        height: 20px;
        background-color: rgba(255, 255, 255, .4);
        border-radius: 50%;
        position: absolute;
        left: 50%;
        top: 0;
        transform: translateX(-50%) rotate(calc(var(--i) * 40deg));
        transform-origin: 10px 100px;
        animation: rotateAnimation 1.2s linear infinite calc(var(--i) * .15s);
    }

    @keyframes rotateAnimation {
        0%,50%{
            background-color: rgba(255, 255, 255, .4);
        }
        50.5%,100%{
            background-color: #fff;
        }
    }
</style>
<body>
    <div class="loading-list">
        <div class="loading-item" style="--i:0"></div>
        <div class="loading-item" style="--i:1"></div>
        <div class="loading-item" style="--i:2"></div>
        <div class="loading-item" style="--i:3"></div>
        <div class="loading-item" style="--i:4"></div>
        <div class="loading-item" style="--i:5"></div>
        <div class="loading-item" style="--i:6"></div>
        <div class="loading-item" style="--i:7"></div>
        <div class="loading-item" style="--i:8"></div>
    </div>
</body>
</html>